A single rainbow appears when sunlight splits and is reflected in droplets of water. When light reflects in water droplets twice, it produces two rainbows, and three reflections create a triple rainbow, according to the scientific body.

Since the sightings are few and far behind, it’s unclear if what Gordon had spotted was truly a triple rainbow, as others have pointed out that all three rainbows would have to be shaped like concentric circles, whereas this photo shows otherwise.